/*
 *  Licensed to the Apache Software Foundation (ASF) under one or more
 *  contributor license agreements.  See the NOTICE file distributed with
 *  this work for additional information regarding copyright ownership.
 *  The ASF licenses this file to You under the Apache License, Version 2.0
 *  (the "License"); you may not use this file except in compliance with
 *  the License.  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 *
 */

package ant.antsys;

import java.io.File;

import org.apache.tools.ant.BuildException;

/**
 * Assertion class to check if file exists
 * @author johnson ma
 */
public class AssertFileExist extends AssertFail {
	private File file;

	// The method executing the task
	public void execute() throws BuildException {
		if (file == null) {
			throw new BuildException("The file attribute must be present.",
					getLocation());
		}
		if (negative) {
			if (file.exists()) {
				if (errorMsg == null) {
					BuildException be = new BuildException(
							"file exist(not expected):" + file, getLocation());
					throw be;
				} else {
					BuildException be = new BuildException(errorMsg,
							getLocation());
					throw be;
				}
			}

		} else {
			if (!file.exists()) {
				if (errorMsg == null) {
					BuildException be = new BuildException(
							"file doesn't exist:" + file, getLocation());
					throw be;
				} else {
					BuildException be = new BuildException(errorMsg,
							getLocation());
					throw be;
				}
			}
		}
	}

	public void setFile(File file) {
		this.file = file;
	}

}
